Car-wheel.



R. J. GARDNER.

GAR WHEEL.

APPLICATION FILED MAR.16, 190a.

Patented Aug. 31, 1909;-

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UNITED STATES PATENT OFFICE.

ROBERT J'. GARDNER, OF PITTSBUEG, PENNSYLVANIA, ASSIGNOR TO S. JARVISADAMS COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORATION OFPENNSYLVANIA.

CAR-WHEEL.

T all whom "it may concern:

Be it known that I, ROBERT J. GARDNER,

a citizen of the United States, residing at Pittsburg, in the county ofAllegheny and 0 State of Pennsylvania, have invented or discovered newand useful Improvements in Car-lVheels, of which the following is aspecification.

My invention relates to car-wheels and its object is to provide animproved wheel of this class which shall be composed of but few partsand can be lubricated thoroughly and economically.

It is also an object of my invention to form the races for anti-frictiondevices in one or more integral groups, whereby they can be readily andcheaply made and. will have a maximum of strength for the amount ofmaterial used. Referring to the drawing accompanying this specification,Figure 1 is a central longitudinal section (partly broken away) througha hub containing one form of my invention; Fig. 2, a section of Fig. 1on the line 22; and Fig. 3, a portion of the sleeve 6 in section to showthe notched or toothed inner end.

On Figs. 1 and 2, 1 represents an axle having fixed thereon the collar2, forming an inner lateral thrust bearing for the inner end of thesleeve 3 on the axle. The hub 4 contains the sleeves or cylinders 5 and6, each having a series of annular ribs 7 projecting radially from itsinterior and surrounding the said sleeve 3. The annular spaces 8 betweenconsecutive ribs and between 'the ends of the hub and the terminal ribs7 constitute races which contain a series of anti-friction rollers 9.The annular face plate 10 covers the outer end of the hub around theaxle and by engagement with the outer end of the sleeve 6 and the outerroller 9 confines the sleeves 5 and 6 and the rollers 9 within the hub.The sleeve 5 preferably has an un- 40 broken outer end, against whichabut the ends of the projections 12 on the outer end of the sleeve 6. Ihave shown the sleeve 6 provided with only three projections 12 spaced120 apart, but any desired number of projections may be used. For apurpose hereinafter stated, I prefer that the projections shall bearranged so that there shall 5,5. chine the outer surface of the sleeve6, it,

Specification of Letters Patent.

Application filed March 16, 1908.

Patented A11 31, 1909.

Serial No. 421, 194.

would be rather difficult to machine the outer face of the projections12, because the cutter would be liable to jump and the projections mightbend or break. In order to avoid the necessity of machining theprojections, I cast the sleeve 6 with the depressions 11 on the outerfaces of the teeth, the depressions preferably being so deep that afterthe outer surface of the sleeve has been machined, the depressions 11will not be entirely removed. In case the sleeve 6 shall be rotated inthe hub, the unmachined outer faces of the projections 12 will not be inengagement with the hub.

The spaces between consecutive projections 12 are designated by thenumeral 13.

1 1 is a hollow lubricating device, preferably like that shown in UnitedStates Patent, No. 875,340, granted Dec. 31, 1907, to Fownes, 51:, andRobert J. Gardner. From the inlet 15 in said device 1%, the oil passesalong the hollow arms 16 and thence through the diametrically oppositepassages 17 in the hub and such of the spaces 18 as stand opposite thesaid passages 17. In case one of the projections 12 should standopposite one of the passages 17, the opposite passage 17 would not be inthe least blocked, since the projections are not arranged diametricallyopposite. The reduction of the thickness of the projections by theformation of the depressions 1]. permits more lubricantto pass when aprojection stands opposite one of the passages 17 than could pass if theprojections had their outer faces flush with the sleeve. The sleeve 3has preferably cast thereon the outwardly extending rib or thrust-ring1.8 which bears against the inner face ofthe inher rib or thrust-ring 7,on the sleeve 6 to limit the inner movement of the hub 4. The frictionof the thrust-ring on the said rib 7 might cause a rotation of thesleeve 6. In such a case, the surface of the sleeve would close thepassages 17 if the sleeve had .but two diametrically opposite holesregistering with the said passage. By providing the projections 12 andthe spaces 13, no amount of rotation of the sleeve 6 can stop the flowof lubricant from the passages 17 or materially decrease its flow. Alinch-pin 19 extends through the axle in front of the hub to limit theoutward movement of the wheel on the axle. i

Preferably, I make the race-units or sleeves 5 and 6 of cast-steel. Ifind it advantageous to cast several race rings into one unit instead offorming the rings separately and then assembling them into units atopposite sides of the thrust-ring 18. Where the races are made ofassembled L-shaped rings, the endwise thrusts of the hub tend to tiltthe rings and cause them to wear and become loose. By casting orotherwise forming several race-rings in a single unit the race-rings aregreatly strengthened at the junctions of the sleeves with the ribs 7 andthere is no liability of the ribs 7tilting, or of any Wear or loosenessappearing between the racerings.

I do not limit myself to any specific number of race-ring units. Iprefer to use the two units 5 and 6 with the form of my invention shownon Figs. 1, 2, and 3, but the number may be greater or smaller.

I claim 1. In a wheel, a hub, spaced concentric sleeves in the hub,anti-friction devices be tween the sleeves, the outer sleeve beingcomposed of integral sections each having a plurality of races, andmeans for s acing apart the inner ends of said sections, said hub beingprovided with a lubricant passage leading to the said space between thesections.

2. In a wheel, a hub, spaced concentric sleeves in the hub,anti-friction devices between the sleeves, the outer sleeve composed ofsections, one of the sections having spaced projections abutting theother section, said hub being provided with lubricant passages leadingto one or more spaces between said projections.

3. In a wheel, a hub, spaced concentric sleeves in the hub,anti-friction devices be tween the sleeves, the outer sleeve composed ofsections, one of the sections having spaced rejections abutting theother section and having their outer faces depressed below the surfaceof the section to which they are attached, said hub being provided withlubricating passages leading to one or more of the spaces between saidrojections.

4. In a wheel, a ub, spaced concentric sleeves in the hub, anti-frictiondevices between the sleeves, the outer sleeve composed of sections, oneof the sections having spaced projections abutting the other section,said hub being provided with lubricant passages leading to one or morespaces between said projections, and said projections being arranged sothat they will not stand opposite all of said passages.

Signed at Pittsburg, Pa, this tenth day of March, 1908.

R. J. GARDNER. Witnesses:

SUZANNE S. BEATTY, ELVA STANIoH.

